#VU11119 Privilege escalation in Linux kernel - CVE-2017-15649
Published: March 15, 2018 / Updated: June 17, 2021
Vulnerability identifier: #VU11119
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear
CVE-ID: CVE-2017-15649
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
Public exploit is available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local attacker to gain elevated privileges on the target system.
The weakness exists in net/packet/af_packet.c due to race condition (involving fanout_add and packet_do_bind. A local attacker can supply specially crafted system calls, trigger mishandling of packet_fanout data structures, trigger use-after-free error and gain root privileges.
The weakness exists in net/packet/af_packet.c due to race condition (involving fanout_add and packet_do_bind. A local attacker can supply specially crafted system calls, trigger mishandling of packet_fanout data structures, trigger use-after-free error and gain root privileges.
Remediation
Install update from vendor's website.